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if the squared difference of the zeros of the quadratic polynomial x2 px 45 is equal to 144 find the value of
in this section we will see how knowledge of some rather simple graphs can help us graph some more complexes graphs collectively the methods we
on dividing the polynomial 4x4 - 5x3 - 39x2 - 46x - 2 by the polynomial gx the quotient is x2 - 3x - 5 and the remainder is -5x 8find the polynomial
if alpha beta are the zeros of the polynomial x2 8x 6 frame a quadratic polynomial whose zeros are a 1alpha and 1beta b 1 betaalpha 1
miscellaneous functionsthe importance of this section is to introduce you with some other functions that dont really need the work to graph that the
there are also two lines on each of the graph these lines are called asymptotes and as the graphs illustrates as we make x large in both the ve and
note that the right side has to be a 1 to be in standard form the point h k is called the center of the ellipseto graph the ellipse all that we
convert following into the convert following into the
if alphabeta are the zeros of the polynomial 2x2 - 4x 5 find the value of a alpha2 beta2 b alpha - beta2ans p x 2 x2 - 4 x
as a last topic in this section we have to briefly talk about how to take a parabola in the general form amp convert it into the following
as noted earlier most parabolas are not given in that form so we have to take a look at how to graph a parabola which is in the general
lets go through first form of the parabola f x a x - h 2 kthere
find the quadratic polynomial whose sum and product of zeros are radic2 1 1 radic2 1ans sum 2 radic2product 1qp x2 - sum x
there are two forms of the parabola which we will be looking at the first form will make graphing parabolas very simple unluckily most parabolas
now lets get back to parabolas there is a basic procedure we can always use to get a pretty good sketch of a parabola following it is 1 determine
we have to probably do a quick review of intercepts before going much beyond intercepts are the points on which the graph will cross the x or
the dashed line along with each of these parabolas is called the axis of symmetry every parabola contains an axis of symmetry and as the graph
all parabolas are vaguely u shaped amp they will contain a highest or lowest point which is called the vertex parabolas might open up or down and
given f x 3x - 2 find f -1 x solutionnow already we know what the inverse to this function is as already weve done some work with it though
the process for finding the inverse of a function is a quite simple one although there are a couple of steps which can on occasion be somewhat
here are two one-to-one functions f x and g x if f o g x x
a function is called one-to-one if no two values of x produce the same y it is a fairly simple definition of one-to-one although it takes an instance
in previous section we looked at the two functions f x 3x - 2 and g x x3 23 and saw
given fx 23x-x2 and gx 2x-1 evaluate fg x fogx and gof xsolutionthese are the similar functions that we utilized in the first set of
we have to note a couple of things here regarding function composition primary it is not multiplication regardless of what the notation may